IMOS - Ships of Opportunity – Bioacoustics - Data from Sealord F.V. Rehua in the Tasman Sea from the 11th of June 2010 to the 15th of June 2010.

This Bio Acoustic data was collected in June 2010 under the IMOS Ship of Opportunity (SOOP) Bio Acoustic (BA) program on Sealord F.V. Rehua (IMOS platform code: ZMRE).Departed: New Zealand, June 11, 2010Arrived:      Australia, June 15, 2010Bio acoustic signals allow understanding how mid-water prey species (known collectively as micronekton) such as small fish, squid, krill and jellyfish are distributed. Mid-water prey form the core of the ocean food web, transferring energy from primary producers at the ocean surface to top predators such as tunas, billfish, sharks, seals and seabirds.The mass and distribution of micronekton reflects broad-scale patterns in the structure and function of the ocean, as well as the dynamics of marine ecosystems. Acoustic mapping is done from fishing and scientific vessels that are equipped with scientifically-calibrated 38 kHz digital echo-sounders that record a slice of acoustic backscatter to a depth of 1500 meters.

本生物声学（Bio Acoustic）数据集采集于2010年6月，隶属于IMOS机会船（Ship of Opportunity, SOOP）生物声学（BA）项目，搭载于Sealord公司F.V. Rehua号作业船（IMOS平台代码：ZMRE）。
启航地：新西兰，2010年6月11日
抵达地：澳大利亚，2010年6月15日
生物声学信号可用于解析小型鱼类、头足类、磷虾及水母等中层猎物物种（统称为小型中层游泳生物（micronekton））的分布格局。中层猎物是海洋食物网的核心组成部分，可将海洋表层初级生产者固定的能量传递至金枪鱼、旗鱼、鲨鱼、海豹及海鸟等顶级捕食者。
小型中层游泳生物的生物量与分布格局，能够反映海洋生态系统结构与功能的宏观模式，以及海洋生态系统的动态变化过程。本次声学测绘工作由配备经过科学校准的38 kHz数字回声测深仪的渔业及科研作业船完成，该设备可记录1500米水深范围内的声学后向散射剖面。